Specifications

Control and operation Casing

The casing of the free-hanging unit is made of inc-plated sheet steel, extra strengthened to minimise vibration, and it has an inspection design panel in the bottom. The plastic air inlet architectural grilles have a perforated inc-plated steel insert. The unit is as standard available in the following colours: a combination of white (RAL 9010) and greyish white (RAL 9002), and in aluminium colour (RAL 9006). With the first option, the inlet plates and the casing are white, and the air inlet grille greyish white. With the second option, both the air inlet grille and the casing come in aluminium colour. Other RAL colours are available on request. The touch pad control panel for a unitwith electric heater has, besides the three buttons for controlling the fan speed, two additional buttons to operate the electric element. The controller is connected to the interface with a low- voltage cable, which has RJII plugs fitted. This type of cable is also used to inter- connect multiple units. The interface translates the signals to a freely adjustable tapped transformer. This transformer is preset to three values, but the rotational speed can be changed by selecting other tappings.

Motor / fan assembl

Two or more (depending on type) dual-inlet, vibration-free centrifugal home fans. Each fan is driven by a suspended rotor motor on ball bearings. The fan casing and the impeller are made of inc coated plate steel. The motor is manufactured according to EN 60-335-1, protection class IP44 (CITY S) or IP54 (CITY M/L), and insulation class F. The motors are, as a standard, fi tted with thermal contacts. These thermal contacts will break the circuit of the motor when the maximum permissible motor temperature is exceeded.

Connections

Hot-water heated units are supplied with a pre-fi tted mains cable with an earthed plug (approx. 2 m long cable). Connection for controls hot-water are at the top of the unit, so the access panel does not need to be removed during installation. The mains cable to the electrically heated units must be connected within the units. The top of the unit has a tension sleeve for the cable to pass through the feeder cable. There is a terminal strip inside the unit.

LPHW Heating coil

The 2-row heating coil is made up of 3/8 copper pipes and aluminium fins. The water supply connections are G1 female thread. The test pressure is 30 bars and the operating pressure is 16 bars max. at 120 C.

Electric heating coil

The electric heating coil is composed of aluminium fins. The coil is controlled by the electronic control unit, and is fitted with overload protection. When the unit is switched off, the fans will continue to rotate until the fins have cooled off sufficiently.
Subject to change. Biddle bv P.O. Box 15 NL-9288 ZG Kootstertille The Netherlands tel.+31 512 33 55 55 fax+31 512 33 55 54 e-mail export@biddle.nl internet www.biddle.info
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